The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1982
Filed:
Oct. 20, 1980
Randall S Shipley, Alvin, TX (US);
Kirby Lowery, Jr, Jackson, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Olefins are polymerized in the presence of a catalyst prepared by reacting trivalent or tetravalent titanium compounds such as a titanium trichloride or a titanium tetraalkoxide, zirconium compounds such as tri-n-butoxy zirconium chloride, an organomagnesium component such as di-n-hexyl magnesium, a halogen source such as ethyl aluminum dichloride and an organoaluminum compound if the halide source or magnesium component does not contain sufficient quantities of aluminum. Polymerization processes employing these catalyst compositions do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics and these catalysts produce polymers having broader molecular weight distributions and, at higher zirconium amounts, lower melt indices than do corresponding catalysts without the zirconium compound.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile